Datasheet > BU9873FVT-GE2

BU9873FVT-GE2

更新时间： 2022-02-26 10:33:13

品牌	Logo	应用领域
罗姆 - ROHM		/
页数	文件大小	规格书
40页	1221K
描述
I2C BUS Serial Interface RTC with High-precision Oscillation Adjustment

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BU9873FVT-GE2 数据手册

Daattaasshheeeett

BU9873

Pin Configuration

(TOP VIEW)

VDD

OSCIN OSCOUT INTRB

BU9873F

BU9873FJ

:SOP8

:SOP-J8

BU9873FVT

BU9873FVM

BU9873NUX

:TSSOP-B8

:MSOP8

:VSON008X2030

32KOUT SCL

SDA

VSS

Figure 3. Pin configuration

Pin Description

Pin No.

Symbol

Input/Output

Output

Function

The 32KOUT pin is used to output 32.768 kHz clock pulses, which is

controlled by an internal register. This pin is enabled during power-on

from 0V, and is CMOS push-pull output.

The SCL pin is used to input clock pulses synchronizing the input/output

data from SDA pin.

32KOUT

SCL

Input

The SDA pin is used to input and output data for writing and reading,

SDA

Input/Output which is synchronized with SCL pin. This pin is N-channel open drain

output.

VSS

The VSS pin is grounded.

INTRB

The

pin is used to output periodic interrupt, or alarm interrupt

(Alarm_A, Alarm_B) to the CPU. This pin is disabled during power-on

from 0V, and is also N-channel open drain output.

INTRB

Output

OSCOUT

OSCIN

VDD

The OSCIN and OSCOUT pins are used to connect the 32.768 kHz

crystal oscillator (Beside the crystal, all other oscillation circuit

components is already integrated in this IC).

The VDD pin is connected to the power supply.

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TSZ02201-0919AGZ00010-1-2

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13.Sep.2013 REV.001

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